Measurement of 7Be and 8B solar neutrinos with Borexino

S. Zavatarelli, G. Bellini, J. Benziger, S. Bonetti, M. Buizza-Avanzini, B. Caccianiga, L. Cadonati, F. Calaprice, C. Carraro, A. Chavarria, F. Dalnoki-Veress, D. D'Angelo, S. Davini, H. De Kerret, A. Derbin, A. Etenko, K. Fomenko, D. Franco, C. Galbiati, S. GazzanaM. Giammarchi, M. Goeger-Neff, A. Goretti, S. Hardy, Aldo Ianni, Andrea Ianni, M. Joyce, V. Kobychev, G. Korga, D. Kryn, M. Laubenstein, M. Leung, T. Lewke, E. Litninovich, B. Loer, P. Lombardi, L. Ludhova, I. Machulin, S. Manecki, W. Maneschg, G. Manuzio, F. Masetti, K. McCarty, Q. Meindl, E. Meroni, L. Miramonti, M. Misiaszek, D. Montanari, V. Muratova, L. Oberauer, M. Obolensky, F. Ortica, M. Pallavicini, L. Papp, L. Perasso, S. Perasso, A. Pocar, R. S. Raghavan, G. Ranucci, A. Razeto, P. Risso, A. Romani, D. Rountree, A. Sabelnikov, R. Saldanha, C. Salvo, S. Schonert, H. Simgen, M. Skorokhvatov, O. Smirnov, A. Sotnikov, S. Sukhotin, Y. Suvorov, R. Tartaglia, G. Testera, D. Vignaud, R. B. Vogelaar, F. Von Feilitzsch, M. Wojcik, M. Wurm, O. Zaimidoroga, G. Zuzel

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

Abstract

Borexino is a real-time liquid-scintillator detector for low-energy neutrino spectroscopy located at the Gran Sasso National Laboratories (Italy). Thanks to the unprecedented radiopurity of the target mass it is providing the first direct and simultaneous measurement of the solar neutrino survival probability in both vacuum-dominated (7Be ν) and matter-enhanced regions (8B ν) by a single experiment. The measured interaction rates for both the 7Be and 8B solar neutrinos are in fair agreement with the SSM predictions in case of the LMA-MSW oscillation solution and a further confirmation of the LMA scenario is provided by the absence of a day-night asymmetry in the 7Be signal. These experimental results allow to improve the upper limit on the neutrino effective magnetic moment. Calibration campaigns aiming to reduce the systematical errors on fiducial volume definition and detector energy response are presently in progress.

OriginalspracheEnglisch
TitelLes Rencontres de Physique de la Vallee d'Aoste
UntertitelResults and Perspectives in Particle Physics
Seiten37-44
Seitenumfang8
AuflageSPEC. ISS.
PublikationsstatusVeröffentlicht - 2010
Veranstaltung23rd Rencontres de Physique de la Vallee d'Aoste: Results and Perspectives in Particle Physics - 23rd Physics Conferences in the Aosta Valley 2009 - La Thuile, Aosta Valley, Italien
Dauer: 1 März 20097 März 2009

Publikationsreihe

NameFrascati Physics Series
NummerSPEC. ISS.
Band50
ISSN (Print)1122-5157

Konferenz

Konferenz23rd Rencontres de Physique de la Vallee d'Aoste: Results and Perspectives in Particle Physics - 23rd Physics Conferences in the Aosta Valley 2009
Land/GebietItalien
OrtLa Thuile, Aosta Valley
Zeitraum1/03/097/03/09

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